Upper limits to coronal emission from X-ray detected T Tauri stars

  • M. T. V. T. Lago
  • M. V. Penston
  • R. M. Johnstone
Part V: Stellar Content of Nearby Molecular Clouds
Part of the Lecture Notes in Physics book series (LNP, volume 237)


We have set a new very low limit to emission in coronal lines in three T Tauri stars - two of which are detected as X-ray sources. This non-detection is surprising, at least in the case of GW Orionis, where, by analogy with the Sun, one could rather have expected to find the line at that level. We discuss the consequences of this result and outline a current attempt to measure the magnetic field in T Tauri stars.


Magnetic Field Intensity Line Flux Observational Constraint Tauri Star Royal Greenwich Observatory 
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Copyright information

© Springer-Verlag 1985

Authors and Affiliations

  • M. T. V. T. Lago
    • 1
  • M. V. Penston
    • 2
  • R. M. Johnstone
    • 3
  1. 1.Grupo de Matemática AplicadaUniversidade do PortoPortoPortugal
  2. 2.Royal Greenwich ObservatoryHerstmonceux Castle, HailshamHailsham, East SussexUK
  3. 3.Astronomy CentreUniversity of SussexFalmerUK

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